It does not affect your rank at all.
If by any chance you get the same score as someone else:
- your marks are same in individual subjects too.
- and you’ve the same number of wrong questions
ONLY in this particular case, you will get the advantage that everyone else also gets – the advantage of AGE. Since you’ll be older than your competitors who joined right after school, you will get a slightly better rank than them IF you have the same marks and meet the above criteria. It’s really not much though.